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UMLS. CSP-HL7-ICD9CM-NCI-NDFRT-RXNORM
%
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
N N- N0 N3 NA NB NC ND NE NF NG NH NI NK NL NM NN NO NP NR NS NT NU NV NX NY NZ
NI NI3 NI5 NIC NID NIE NIF NIG NIH NIK NIL NIM NIN NIO NIP NIS NIT NIV NIZ

nitrogenous heterocyclic compound

[ring compounds having at least one nitrogen atom in their nuclei. ( CSP )]
UMLS (CSP) C0597072
 
Organic Chemical
Relation/PAR: Heterocyclic Compound
Relation/CHD: acridine
azepine
imidazole
2 benzazine
lactam
oxazine
phenanthridine
phenanthroline
phenazine
PIPERAZINE
pteridine
purine
pyridine
pyrrole
quinazoline
1 benzazine
quinolizine
thiadiazine
thiazine
triazine
tropane
Aminoethylene
pyrrolidine
quinoxaline
diazine
nucleobase
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